logging: port ugly accidental side-effect into readable explicit feature
logging: port ugly accidental side-effect into readable explicit feature

LogFormatterForConsole.format() was mutating its 'record' argument,
which was affecting all handlers/formatters

wakiyamap/electrum-mona,spesmilo/electrum,spesmilo/electrum,vialectrum/vialectrum,spesmilo/electrum,wakiyamap/electrum-mona,fujicoin/electrum-fjc,wakiyamap/electrum-mona,neocogent/electrum,vialectrum/vialectrum,spesmilo/electrum,neocogent/electrum,fujicoin/electrum-fjc,vialectrum/vialectrum,pooler/electrum-ltc,wakiyamap/electrum-mona,pooler/electrum-ltc,fujicoin/electrum-fjc,neocogent/electrum,pooler/electrum-ltc,pooler/electrum-ltc